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(No Model.) '4 sheets-sheen 1.

H. LUDWIG. 1.00K.

No. 446,101. l Patented Feb. 10,1891.

THE Nonms news co., mno-urna., wnswmams, n. c.

(No Model.) 4 Sheets-Sheet 2:

H. LUDWIG;

LOCK.

No. 446,101. Patented Feb. l0, 1891.

4 Sheets-Sheet 3. H. LUDWIG. LOCK (No Model.)

No. 446,101. Patented Feb. 10,1891.

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TME. wams Pneus co., moro-mno.. msmm'rou. D. c,

(No Model.) 4 SheetS-Sheei.v 4.

H. LUDWIG.

LOOK.

10.446,101'. Patentedreb. 10,1891.

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a UNITED STATES PATENT OFFICE.

HEINRICH LUDWIG, OF SCHlVElNFURT, GERMANY.

LOCK.

SPECIFICATION forming part of Letters Patent No. 446,101, dated February 10, 189.1.

Application filed January 15, 1890. Serial No. 336,992. (No model.) Patented in Germany December 15. 1888. No.' 48,201; in Austria-Hungary April15,l889,No.19,792/36,154; in England May 3,1889,No.'7,411, and in Belgium May 7,1889,

To all whom t may concern:

Be it known that I, HEINRICH LUDWIG, a subject of the Emperor of Germany, residing at Schweinfurt, in the Empire of Germany, have invented a new and useful Lock, (for which I have obtained a patent in Germany, No. 48,201, bearing date December 15, 1888; in Austria-Hungary, No. NJW/36,154., bearing date April 15, 1889.; in Great Britain, No. 7,411,bearing date May 3, 1889,and in Belgium, No. 86,145, bearing date May '7, 1889,) of which the following is a specification.

The invention relates to improvements in locks, and more particularly to locks of safes; and has for its object to aord means to move two distinct-bolts, which may be respectively termed the locking-bolt and the latch-bolt at option, simultaneously or separately. The locking-bolt is bifurcated at the end, the two ends so formed projecting from the front rim of the lock-case. The latch-bolt is guided in the body of the main bolt. Its beveled edge projects from the rim between the bifurcated ends of the main or locking bolt, and is held projected by a spring. The locking-bolt may be moved back and fort-h by hand through a rocking lever having a pin engaging in a notch in the bolt and Inoved by the square of the usual knob or handle.

The improved lock is represented in the accompanying drawings;

Figure 1 shows the lock when open; Fig. 2, with the latch-bolt advanced. Fig. 3 shows the lock when shut. Fig. et is a vertical section of the lock in the position of Fig. 3. Fig. 5 is a horizontal section of the lock in the position of Fig. 3.

n The bolt A, provided with the bifurcated heads A and A2, is moved to and fro by means of the hub C. The rotation of the hub C depends upon the tumbler, which consists of a bed-plate G and the stop-bolt G. Upon the tumbler the rocking pin F acts when turned within the lock, the tappet f of the rocking pin resting within the notch g4 of the bedplate G of the tumbler, and serving to shift up and down along the guiding-pins g of the ground-plate G with its vertical slots. This pin F, situated within the lock, cannot be reached direct from without. Its rotation is derivedin lmay be used an ordinary key which can be withdrawn. The pin F has alsoasecond tappet f', which operates the double-arm lever E. This lever E revolves on a pin a, secured to bolt A, and it is used at the corresponding position of the tappetf to withdraw the latch D and to keep back the same. The head of the latchD is situated between the bolt-heads A and A, while its shaft is partly inserted into the bolt A and finishes with an arm I, upon which acts the lever E. The spiral spring d rests partly upon a projection of the latch D and partly on the guiding-pink of the bolt and tends to push forward the latch D.

If, as represented in Fig. 1, the lock is opened the tappet f keeps the bed-plate G of the tumbler in its highest position. The stop-bolt G has a cylindrical projection g5, with which it can be moved within a hole in the pin g', arranged in the bed-plate G. The spiral spring g2 presses the stop-bolt G away from the pin g. The stop-bolt G has, besides, two opposite projections g3, one of which is guided in a slot in the lock-box cover, while the other one is guided in a slot of the bed-plate G.

The slot in the bed-plate G only reaches so far below that in the position shown by Fig. 1. lThe stop-bolt G is some distance above the bolt A. The bolt A is shifted quite back in Fig. 1 by the rotation of the hub C. The arm c connected thereto carries a pin c', which is inserted into the slot a2 of the bolt A. The bolt A is secured in its Withdrawn position by the domed head of the pin a', forced by a spring a4 against the lock-plate, and entering a cavity ai, Fig. of the lock-plate.

The latch D is kept entirely back because the upper arm of the lever E presses itself against the almost horizontal tappet f', and in consequence thereof thev lower part of the lever E presses back the arm d of the latch D. On turning the wards of the pin F, as indicated by dotted lines in Fig. l, downward about ninety degrees, the spring Cl shifts forward the latch D, the arm d presses against the lever E, so that its upper arm enters the notch f2, Fig. t, of the key F and the bed- IOO the mechanism (explained by Fig.2) thelatch D only acts and the lock can be shut by slamming in the known manner. In order to then withdraw the latch D by the action of the le- `ver E the tappets f f are turned back into the dotted position in Fig. 2. If it is wished to push forward the latch D andthe boltheads A A to shut thoroughly the lock,` as represented in Fig. 3, the boltA is moved forward by'tu-rning the hub C', and the tappets ff are turned down. The stop-bolt Gis then pressed behind the bolt A by the spring` g2 and secures the same againstwithdrawal.

The Withdrawal of' the bolt A and of the latch D by means of the hub C can only be elected when the tappetsff have been previously turned upward into the posit-ionindicated in Fig. l.

Having now particularly described-and ascertained the nature-oi said invention andinpin F, provided with two wards f and f', the

tumbler consisting of a bed-plate g and the stop-bolt G', the double-arm lever E, acting upon the armd of the latch D,the boltA, provided with the bifnrcated heads A and A2, the hub C, the spiral spring g2, pressingr down the stop-bolt G', the spiral spring d', resting upon a projection ofthe latch D, and thepin a, entering,` by the pressureA of a spring d4 the cavity 0.3, as described.

In testimony whereof I sign ed this specification in the presence of two subscribing wit,- nesses.

HEINRICH LUDWVIG. Witnesses :l

HENRY F. E. HEss, JEAN GRUND. 

